Analysis of Lignin
Quantity of lignin in pulp, wood, or black liquor
Brenda Mijares, with Econotech since 1990, preparing for a DCM soxhlet extraction.
- Lignin in black liquor, UV method - reference SCAN N22
- Klason (acid insoluble) lignin content in wood and unbleached pulp after DCM extraction - reference Tappi T222
- Klason lignin content in bleached pulp (Excludes DCM extraction)
- Acid soluble lignin - reference Tappi um-250
- Kappa number of pulp - reference Tappi T236
- Permanganate Number of Pulp (K#) - reference Tappi um-251
- Residual lignin in bleached dissolving grade pulp - phosphoric acid method
Properties of lignin
- Moisture content of as received material - reference ASTM D3173
- Water extractives - reference NREL TP 510 42619
- DCM Extractives - reference Tappi T204
- Ash content @ 525°C - reference Tappi T211
- Ash content @ 750°C - reference ASTM D3174
- Metals by ashing, acid digestion and ICP analysis
- Micro Elemental analysis (C, H, N and O)
- Calorific value (BTU/lb) - Parr Oxygen bomb, reference Tappi T684
- Total Sulfur content
- Total Chloride content
- Carbohydrates (arabinan, xylan, mannan, galactan, glucan)
- Infrared spectra
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